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A RAINFALL MEASUREMENT DEVICE USING UNDERWATER ACOUSTIC SIGNALS

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
6986
Program Year/Program:
1987 / SBIR
Agency Tracking Number:
6986
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Creare
P.O. Box 71 Hanover, NH 03755-
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1987
Title: A RAINFALL MEASUREMENT DEVICE USING UNDERWATER ACOUSTIC SIGNALS
Agency: DOE
Contract: N/A
Award Amount: $49,173.00
 

Abstract:

MEASUREMENTS OF RAINFALL OVER LARGE BODIES OF WATER SUCH AS LARGE LAKES OR OCEANS ARE MADE INFREQUENTLY BECAUSE OF THE LACK OF AN ACCURATE MEASURING DEVICE. A LARGE PORTION OF THE EARTH'S PRECIPITATION FALLS OVER THE OCEANS; THEREFORE, IT IS ESSENTIAL FOR UNDERSTANDING GLOBAL CLIMATE TO HAVE ACCURATE MEASUREMENTS OF RAINFALL OVER LARGE WATER AREAS. A DEVICE WILL BE DEVELOPED TO MEASURE RAINFALL ACCURATELY BYUSING UNDERWATER ACOUSTIC SIGNALS. THE BASIC PRINCIPLE OF THIS DEVICE IS DIGITAL PROCESSING OF THE UNDERWATER ACOUSTICSIGNAL GENERATED BY RAINFALL TO DETERMINE ITS INTENSITY. THE PRINCIPLE HAS BEEN DERIVED THEORETICALLY AND DEMONSTRATED EXPERIMENTALLY. HOWEVER, THERE ARE IMPORTANT LIMITATIONS IN THE METHOD USED, AND IT IS PLANNED IN THIS PROJECT TO ESTABLISH MORE SOPHISTICATED SIGNAL-PROCESSING TECHNIQUES TO OVERCOME THESE LIMITATIONS. SPECIFICALLY, OUR GOAL IS TO IMPROVE SIGNIFICANTLY THE ACCURACY OF THE MEASUREMENTS: WHEREAS THE ACTUAL STATE OF THE ART YIELDS RAINFALL RATE ESTIMATES WITHIN A FACTOR OF 2 OF THE ACTUAL VALUE, THE GOAL OF PHASE I IS TO SHOW THE FEASIBILITY OF SIGNAL PROCESSING TECHNIQUES THAT WILL YIELD ESTIMATES WITH MEASUREMENT ERRORS NO GREATER THAN 20%. THE FEASIBILITY STUDY WILL INCLUDE THEORETICAL AND EXPERIMENTAL WORK. PHASE II WILL INCLUDE THE DEVELOPMENT OF A PROTOTYPE DEVICE AND ITS TESTING UNDER ACTUAL CONDITIONS, AND PHASE III WILL BE DEVOTED TO THE DEVELOPMENT OF A COMMERCIAL DEVICE THAT WILL ALLOW FOR EASY MEASUREMENTS OF RAINFALL OVER LARGE BODIES OF WATER.

Principal Investigator:

Dr frederic laville
6036433800

Business Contact:

Small Business Information at Submission:

Creare Inc
Po Box 71 Etna Rd Hanover, NH 03755

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No